Mining-machine



(No Model.)

W. A. WRIGHT.

MINING MACHINE.

-@II. i Ji UUBDUDIIBBBDUUMI N PETERS. Phnmmngmphen wagnmgenn. D, C.

'Y UNITED STATES PATENT OFFICE.

VILLIAM A. VRIGHT, OF OENTRETON, NEV JERSEY, ASSIGNOR TO W'ILLIAM M. STEVART, TRUSTEE, OF PHILADELPHIA, PENNSYLVANIA.

tamme-MACHINE.

SPECIFICATION forming part of Letters Patent No. 351,349, dated October 19, 1886.

Application filed April 23, 1F86. Serial No. 199,905. (No model.)

T all whom it may concern.-

Beit known that I, WILLIAM A. WRIGHT,

a citizen of the United States, residing at Centreton, in the county of Burlington, State of New Jersey, have invented a new and useful Improvement in Mining lWIachinery, which improvement is fully set forth in the following specification and accompanying drawings, in which- Figure 1 represents an end elevation of mining machinery embodying my invention. Fig. 2 represents a partial end elevation and partial vertical section thereof. Fig. 3 represents a longitudinal section in line 00 x, Fig. 2.

Similarl letters of rference indica-te corresponding parts in the several iigures.

My invention consists of a mining-machine having drills which may be readily operated and set at various angles and in different posi- ZO tions, as will be hereinafter fully set forth.

Referring to the drawings, A represents a standard which is hollow or partly hollow,and has a screw, B, within the saine swiveled on the top thereof. 2: C represents a sleeve inclosing a cylinder, d C', within which are guided the sliding drills D, said sleeve having at its side a disk, E, which is rotatingly connected with a disk, F, formed on a vertical sleeve, G, the latter encircling the standard A, and having a lug, H, which passes through a slot in the standard A, and is engaged bythe screw B. Owing to the disks E F, the sleeve, and consequently the cylinder, may be turned so as to elevate or depress the points of the drill, said disks being clamped together when the drills are adjusted by means of'a bolt or bolts, as at J. Owing to the screw B, the sleeve C and cylinder G, and consequently the drills, may be raised and 40 lowered. On the rear end of the cylinder is mounted a rotary cam, K, which is provided with acrank-handle,L, for operating purposes, said cam being so disposed in relation to the head D of the drills that it necessarily engages with said heads, and thus withdraws the drills preparatory to the blows to be effected by the latter. Vhen the cam clears the head of a drill, the spring M, which bears against the drill, and is compressed by the withdrawal-of 5o the drill, becomes operative, and forcibly imv pels the drill against the coal or other mineral to be mined. In order to advance the drills the cylinder has swiveled on it a sleeve, N, on which is swiveled a longitudinally-extending screw, P, whose threads engage with a threaded 5 5 lug, Q, fixed to the sleeve G. By the rotation of said screw the cylinder may be advanced into the work and withdrawn when required, the drills following the motions thereof.

The cylinder C is rotated within the sleeve 6o C, and thus the drills may be made to cutin different places in curvilinear direction, the rotation of said cylinder being accomplished by a rack, R, which is secured to the periphery of thc cylinder, and engaged by a pinion, S, mounted on one arm of the sleeve N.

Rotation of the cylinder is prevented by means of a screw, T, passed through either of the sleeves C N and tightening against said cylinder. 70

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

l. The cylinder C', having drills, in combination with inclosing -sleeve O, having side disk, E, in combination with the hollow standard A, having the screw B operating within the same, the sleeve G, with lug H, engaging the said screw B, and the disk F, formed on the side of sleeve G, the said disk E being rotat- 30 ably connected with said disk F, all substantially as described.

2. A mining-machine having a cylinder with drills guided therein, a rotatable cam mounted on the end of said cylinder and adapted to 35 withdraw said drill, and a spring within said cylinder, having one end secured to the cylinder and the other end secured to the drill, whereby the motion of the drill may be reversed, all of said parts being combined sub- O stantially as and for the purposeset forth.

3. In a mining-machine, the cylinder O', having reciprocating drills D, and sleeve C, with side disk, E, in combination with standard A, having the screw B iuclosed therein, and the slee-v G, adapted to be operated by said screw- B, and provided with disk F, said disk E being rotatably secured to said disk F, all substan. tially as described. A

4. In a mining-machine, the cylinder C',hav 10o the purpose set forth.

said drills, in combination with the sleeves N and C, the screw P, swiveled in the sleeve N and Working in the lug Q of said sleeve C, the 1,5 pinion S, journaled in an arm of the sleeve N and Vin engagement with the ,Said rack, and means, substantially as described, for rotating the said pinion S, all substantially as and for the pu-rpose set forth.

WM. A. WRIGHT. Witnesses:

JOH'N A. WIEDERSHEIM, A. P. GRANT.

ing drills guided therein, and a rack, R, on the periphery thereof, and means, substantially as described, for reciprocating said drills, in combination with sleeve N, surrounding said cylinder at one end,the pinion S, mounted on said sleeve N and in engagement with said rack, and means, substantially as described, for rotating said pinion, all substantially as and for 5. In amining-machine, the cylinder G,hav :ing rack R on the periphery thereof, and provided With drills, and means for reciprocating 

